【填空题】沙丘的类型较多，请任意写出四种：（）、（）、（）、（）。（）。

【简答题】Deserts are found where there is little rainfall or where rain for a whole year falls in only a few weeks' time. Ten inches of rain may be enough for many plants to survive if the rain is spread throu...

【简答题】《航海条例》

【简答题】试述沙丘移动方式、速度影响因素？

【单选题】一夜之间,许多座百米以上的沙丘让风搬到十公里之外。

【单选题】Part ADirections: Read the following four texts．Answer the questions below each text by choosing A, B, C or D ．Mark your answers on ANSWER SHEET 1.It was the worst tragedy in maritime (航海的) history, s...

【简答题】沙丘的形成和发育不会受（）的影响。

【单选题】It was the worst tragedy in maritime (航海的) .history, six times more deadly than the Titanic. When the German cruise ship Wilhelm Gustloff was hit by torpedoes (鱼雷) fired from a Russian submarine in th...

【简答题】简述纵向沙丘的成因。

【简答题】1 坐垫 2 沙丘 3 航海